All these are manga I have finished, or have read enough of, to believe they are great series. This is just my opinion :)
I think Black Butler is classified as shounen, so that's why it's on this list. These are series that I have either finished or read enough of to rate. These are all just my opinion.
In my opinion, these are my worst picks for shoujo manga. All the manga on this list are series I have finished or are close to finishing.